Reason

Reason: Credential is not supported if the CORS header ‘Access-Control-Allow-Origin’ is ‘*’

What went wrong?

The CORS request was attempted with the credentials flag set, but the server is configured using the wildcard ("*") as the value of Access-Control-Allow-Origin, which doesn't allow the use of credentials.

To correct this problem on the client side, simply ensure that the credentials flag's value is false when issuing your CORS request.